iOS 将数组添加到 Plist 文档根目录

Question

好的，那么在收到反馈后，我正在对我的代码进行此更改，它正在运行，但只是添加和替换第一个代码？

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
    NSString *user_id = [prefs objectForKey:@"user_id"];
    NSString *fixture_id = [prefs objectForKey:@"fixture_id"];

    // Get path to documents directory
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
                                                         NSUserDomainMask, YES);
    if ([paths count] > 0)
    {
        NSString  *selectedPath = [[paths objectAtIndex:0]
                                   stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-%@",user_id, fixture_id]];

        // Read both back in new collections
        self.mySelectionsArray = [NSArray arrayWithContentsOfFile:selectedPath];

        NSLog(@"Players Selected = %@", self.mySelectionsArray);
    }


    NSDictionary *tempDic = [[[self.listOfPlayersArray objectAtIndex:indexPath.section] objectForKey:@"contacts"] objectAtIndex:indexPath.row];

    NSString *avatar = [tempDic objectForKey:@"avatar"];
    NSString *avatarSmall = [tempDic objectForKey:@"avatar_small"];
    NSString *first_name = [tempDic objectForKey:@"first_name"];
    NSString *last_name = [tempDic objectForKey:@"last_name"];

    NSDictionary *innerDic;

    innerDic = [NSDictionary dictionaryWithObjects:
                 [NSArray arrayWithObjects: avatar, avatarSmall, first_name, last_name, nil]
                                            forKeys:[NSArray arrayWithObjects:@"avatar", @"avatar_small", @"first_name", @"last_name", nil]];

    self.mySelectionsArray = [NSMutableArray arrayWithObject:[NSDictionary dictionaryWithDictionary:innerDic]];


//    [self.mySelectionsArray insertObject:innerDic atIndex:0];
    [self.mySelectionsArray addObject:innerDic];

    [tableView deselectRowAtIndexPath:indexPath animated:YES];

    if ([paths count] > 0)
    {
        // Path to save array data
        NSString  *arrayPath = [[paths objectAtIndex:0]
                                stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-%@",user_id, fixture_id]];

        NSLog(@"Path: %@",arrayPath);

        // Write array
        [self.mySelectionsArray writeToFile:arrayPath atomically:YES];
    }

    [self dismissViewControllerAnimated:YES completion:nil];
}

现在正在检查数组并将其下拉然后添加对象

选择播放器后的plist是这样的；

{
    "first_name" = Ollie;
    "last_name" = Akroyd;
},
{
    "first_name" = Ollie;
    "last_name" = Akroyd;
}
)

Answer 1

声明你的代码，mySelections是空的，我猜你想向其中添加innerDic；此外，您正在保存 mySelections 而不是 userSelections。 您应该将innerDic 添加到mySelections 并保存userSelections 来解决您的问题。

编辑 而不是

self.mySelectionsArray = [NSMutableArray arrayWithObject:[NSDictionary   dictionaryWithDictionary:innerDic]];

覆盖读取的数组，添加对象:

[self.mySelectionsArray addObject:innerDic];

self.mySelectionsArray 必须是可变的，因此而不是

self.mySelectionsArray = [NSArray arrayWithContentsOfFile:selectedPath];

写

self.mySelectionsArray = [[NSArray arrayWithContentsOfFile:selectedPath] mutableCopy];